jni jnienv GetStringLength example c c++ java

GetStringLength

jsize GetStringLength(JNIEnv *env, jstring string);

Returns the length (the count of Unicode characters) of a Java string.

LINKAGE:

Index 164 in the JNIEnv interface function table.

PARAMETERS of GetStringLength

env: the JNI interface pointer.

string: a Java string object.

RETURNS of GetStringLength

Returns the length of the Java string.

Example of GetStringLength

const wchar_t * utf16 = (wchar_t *)env->GetStringChars(bytes, NULL);
size_t length = (size_t)env->GetStringLength(bytes);        
...
env->ReleaseStringChars(bytes, (jchar *)utf16);